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Caleffi 519 Series 519700A Differential Pressure By Pass Valve With Graduated Scale, 1-1/4 x 1-1/4 in, Up to 45 gpm
Caleffi 519 Series 519700A Differential Pressure By Pass Valve With Graduated Scale, 1-1/4 x 1-1/4 in, Up to 45 gpm
Caleffi Differential Pressure By Pass Valve With Graduated Scale, 519 Series, 1-1/4 x 1-1/4 in Nominal, FNPT Inlet x MNPT Union Outlet Connection, Up to 45 gpm Flow Rate, 150 psi Working, 2 to 10 psi Adjustable, EPDM O-ring Seal, Brass, 32 to 230 deg F, 7-3/8 in H
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$308.00Â /Â ea
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- Attributes
- Additional Information
- Features & Benefits
- Documents
- Marketing Information
Attributes
BrandCaleffi
Connection TypeFNPT Inlet x MNPT Union Outlet
Dimensions7-3/8 " H
Flow RateUp to 45
IndustryHydronics
MaterialBrass
Nominal Size1-1/4 x 1-1/4
Pressure Rating150 psi Working, 2 to 10 psi Adjustable
Seal MaterialEPDM O-Ring
Series519 Series
Temperature Rating32 to 230
Additional Information
ISO 9001|ANAB Certified|FM Approved
Features & Benefits
- Brass valve plug, EPDM valve plug gasket, asbestos-free NBR union seals, ABS control knob, stainless steel spring 30% water, glycol solutions
Documents
Marketing Information
The differential pressure by-pass valve is used in systems with a fixed speed circulating pump supplying several zones controlled by two way zone valves. This valve ensures that the head pressure of the pump is proportional to the number of two way valves being closed. It will by-pass the differential pressure created by the pump as the zone valves close, thus eliminating water hammer noise. The 519 Series is available with conventional NPT and sweat union connections. Also available for size 3/4 in, the Presscon copper tailpiece with union nut makes installation and maintenance fast, easy and efficient. Special slots in the EPDM O-ring allows fluid to leak during system testing if unpressed and provide a perfect leak-proof seal when completely pressed.
Caleffi 519 Series 519700A Differential Pressure By Pass Valve With Graduated Scale, 1-1/4 x 1-1/4 in, Up to 45 gpm
BrandCaleffi
MFG #519700A
Keller #17475
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$308.00Â /Â ea